Given that the pair of triangles is similar, find the length of the side labeled n.
A. 15
B. 5
C. 10
D. 11
Answer: C
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Find the exact value under the given conditions.cos ? = - 
, 
< ? < ?; sin ? = - 
, ? < ? < 
Find tan (? + ?).
A. 
B. 
C. 
D. 
Translate the problem situation to a system of equations. Do not solve.The sum of two numbers is 9. Five times the smaller number minus twice the larger number is 17. What are the numbers?
A. x + y = 9; 5x - 2y = 17 B. x + y = 9; 2x - 5y = 17 C. x - y = 9; 5x + 2y = 17 D. x + y = 9; 5x + 2y = 17
Write an equation for the line described. Give your answer in slope-intercept form.slope 0, y-intercept 
A. y = - 
x
B. y = - 
C. x = - 
D. y = 
x
Let 
and compute the Riemann sum of f over the interval 
, using
?
Two subintervals of equal length (
).
?
Five subintervals of equal length (
).
?
Ten subintervals of equal length (
).
?
In each case, choose the representative points to be the midpoints of the subintervals.
?
A. 87.0625 sq units; 87.43 sq units; 87.4825 sq units;
B. 87.0625 sq units; 87.4825 sq units; 87.43 sq units;
C. 87.4825 sq units; 87.43 sq units; 87.0625 sq units;
D. 87.43 sq units; 87.4825 sq units; 87.0625 sq units;